Gaya APA
Mahmud, N. (2007).
English For Muslim University Students 4Th Edition .
Yogyakarta:
Universitas Islam Negeri.
Gaya MLA
Mahmud, Nasrun.
"English For Muslim University Students 4Th Edition".
Yogyakarta:
Universitas Islam Negeri,
2007.
Buku Tex.